SU1344589A1 - Device for dressing shaped grinding wheel - Google Patents

Abstract

The invention relates to the field of mechanical engineering and can be used to extract the cuts of spiral drills, where the circular profile is formed by matching radii. The purpose of the invention is to simplify the design. To do this, on the basis of the device for dressing the shaped grinding wheel 23, rotary guides are installed in which the rotary body 2 with the diamond holder 1 is placed. The adjustable cam 13 of the displacement of the body 2 is kinematically connected with the latter. Rotary directions can be made linear or in the form of a sleeve. 2 hp f-ly, 5 ill. from 4U 4 SL 00

Description

The invention relates to mechanical engineering and can be used in the manufacture of precision shaped parts, in particular when grinding out the grooves of spiral drills.

The purpose of the invention is to simplify the design of the device.

FIG. 1 shows schematically a device with linear guides, the section in FIG. 2 - the same, front view; in fig. 3 shows a device with guides in the form of a sleeve, a slit; in fig. A - the same, front view; in fig. 5 shows section A-A in FIG. 1 and 3.

The diamond holder 1 with diamond is mounted in a rotary housing 2 and fixed with a screw 3. The housing is mounted rotatably in the opening of the carriage 4 (FIG. 1) or the sleeve 4 (FIG. 3). The carriage 4 (Fig. 1) is mounted with the possibility of displacement in the guides 5 fixed with screws on the base 6. These screws are located in the radius grooves of the guides 5, which makes it possible to rotate them relative to the base 6.

 The sleeve 7 (Fig. 3) is installed with the possibility of rotation in the flange 8, mounted on the base 6. The opening of the sleeve 7 is mixed relative to the axis of the sleeve on the value of eccentricity e. The rotation of the camera housing 2 relative to the carriage 4 (Fig. 2) or the sleeve 7 (Fig. 3) is carried out by means of a hydraulic cylinder 9 with a rack gear 10, which engages with gear 11. The gear 1 1, like the disk 12, is fixed on the swivel housing 2. At the end of the housing, on the disk 12, there is an adjustable cam 13, which interacts with the roller 14 of the gear sector 15. The gear sector 15 is pivoted relative to the guides 5 (Fig. 2) or the base B (Fig. 4) and meshes with rack 16, mounted on the carriage 4 (Fig. 2) or on sector 17 (FIG. 4) which is rigidly mounted on the sleeve Spring 18 provides clamping of the roller 1 4 to the cam 13 or clamping the toothed sector 15 to the adjusting screw 19 when there is no contact between the roller 14 or the cam 13. Carriage 4 (Fig. 2 ) or sector 17 (Fig. 4) under the action of the spring 20 (Fig. 2) or 21 (Fig. 4) pressed to the adjustment

The screw 22 (Fig. 2) attached to the guides 5 or to the screw 19 (Fig. 4) fixed on the base 6. The diamond holder 1 with diamond is intended for profile dressing of the grinding wheel 23 along radii R (- R arcs I and II (Fig. 5). The displacement cam 13 is made with guides

grooves 24. The cam displacement is monitored on a nonius 25. The cam is fixed with screws 26.

The device works as follows.

The diamond holder 1 with diamond is set relative to the 0-0 axis of the rotary body 2 by the radius R using a template and fixed with a screw 3. The diamond top is brought into contact with the grinding wheel 23 by means of an adjusting screw 22, while moving the carriage 4 (FIG. 2) or turn the sleeve 7 together with the sector 17 pressed to

the adjusting screw 22 by the spring 21. When the oil is fed into the hydraulic cylinder 9, the rack 10 and gear 11 rotate the rotary body 2 together with the disk 12 and the cam 13. The adjusting screw 19, to which the gear sector 15 with the roller 14 is pressed against the action of the spring 18 between cam 13 and roller 14 in such a way that arc I describes the diamond when there is no contact of roller 14 with cam 13. When the diamond passes to arc II, cam 13 comes into contact with roller 14, while the gear sector 15 is rotated and the gear shaft moves ku 16, and with it the carriage 4 (figure 2). or sector 17 (FIG. 4) with sleeve 7. The magnitude of this movement is determined by the setting of the cam 13 and the direction of movement of the carriage 4 (FIG. 2) in the guides 5 or the direction of displacement of the eccentricity e when the sleeve 7 is turned (FIG. 3). The adjustment of the cam 13 is carried out by moving it along the guiding grooves 24 ' and the required amount of displacement, with control by a vernier 25. The position of the cam is fixed by screws 26.

Thus, the grinding wheel profile is adjusted.

23.

Claims (3)

Claim 1 An apparatus for dressing a shaped grinding wheel comprising a base, guided with a rotatable body with a diamond holder installed in them, a body displacement cam kinematically connected with a rotary body, which, in order to simplify the design, The wheels are rotatable and the cam is adjustable. 2. A device according to claim 1, characterized in that the guides are made in the form of a sleeve, the axis of rotation of which is eccentric to the axis of the rotary body. 3. The device according to claim 1, characterized in that the guides are made linear and mounted with the possibility of inclination to the axis of the grinding wheel. 1 5l2 fig / 25 g ig fg FIG. 2 / 3 f FIG. 5 10 FIG.